Solubility of CO2 in 1-butyl-3-methylimidazolium diethylene-glycolmonomethylethersulfate and trihexyl(tetradecyl)phosphonium dodecyl-benzenesulfonate

摘要: Abstract This work is focused on the possible capture of carbon dioxide using ionic liquids (ILs). Such solvents are gaining special attention since efficiency many processes can be enhanced by judicious manipulation their properties. In this work, potential use two ILs: 1-butyl-3-methylimidazolium diethylene-glycolmonomethylethersulfate [BMIM][MDEGSO4] and trihexyl(tetradecyl)phosphonium dodecyl-benzenesulfonate [THTDP][C12H25PhSO3] evaluated through measurement liquid–vapor equilibrium in mixture with CO2 at temperatures up to 373 K pressures 300 bar. Experimental data indicate that 95 g absorbed per kg liquid. For each IL, parameters PC-SAFT EoS were estimated experimental density measured under atmospheric pressure a wide range temperatures. After fitting binary interaction parameter kij equilibria data, model was able describe accurately solubility these liquids.